I am configuring workflow in our brandnew Helix ALM. I must be missing something, for there seems no discernable difference between "locking", say, a requirement, and "closing" it. So, two questions:
1) What is the differences between "Locking" a requirement vs. "Closing" it? Are these terms defined somewhere?
2) What would be an example usage scenario were I would use one, but not the other?